ndp.h
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1 /*
2  * Copyright (C) 2015 Martine Lenders <mlenders@inf.fu-berlin.de>
3  *
4  * This file is subject to the terms and conditions of the GNU Lesser
5  * General Public License v2.1. See the file LICENSE in the top level
6  * directory for more details.
7  */
8 
20 #ifndef NET_NDP_H
21 #define NET_NDP_H
22 
23 #include <stdint.h>
24 
25 #include "byteorder.h"
26 #include "net/ipv6/addr.h"
27 
28 #ifdef __cplusplus
29 extern "C" {
30 #endif
31 
37 #define NDP_RTR_ADV_FLAGS_MASK (0xc0)
38 #define NDP_RTR_ADV_FLAGS_M (0x80)
39 #define NDP_RTR_ADV_FLAGS_O (0x40)
49 #define NDP_RTR_ADV_CUR_HL_UNSPEC (0)
55 #define NDP_RTR_ADV_LTIME_SEC_MAX (9000)
56 
61 #define NDP_NBR_ADV_LTIME_NOT_DR (0)
62 
63 #define NDP_NBR_ADV_REACH_TIME (0)
64 #define NDP_NBR_ADV_RETRANS_TIMER (0)
72 #define NDP_NBR_ADV_FLAGS_MASK (0xe0)
73 #define NDP_NBR_ADV_FLAGS_R (0x80)
74 #define NDP_NBR_ADV_FLAGS_S (0x40)
75 #define NDP_NBR_ADV_FLAGS_O (0x20)
86 #define NDP_OPT_SL2A (1)
87 #define NDP_OPT_TL2A (2)
88 #define NDP_OPT_PI (3)
89 #define NDP_OPT_RH (4)
90 #define NDP_OPT_MTU (5)
91 #define NDP_OPT_AR (33)
92 #define NDP_OPT_6CTX (34)
93 #define NDP_OPT_ABR (35)
100 #define NDP_OPT_PI_FLAGS_MASK (0xc0)
101 #define NDP_OPT_PI_FLAGS_L (0x80)
102 #define NDP_OPT_PI_FLAGS_A (0x40)
110 #define NDP_OPT_PI_VALID_LTIME_INF (UINT32_MAX)
111 #define NDP_OPT_PI_PREF_LTIME_INF (UINT32_MAX)
119 #define NDP_OPT_PI_LEN (4U)
120 #define NDP_OPT_MTU_LEN (1U)
121 
129 #define NDP_MAX_INIT_RA_INTERVAL (16000U)
130 #define NDP_MAX_INIT_RA_NUMOF (3U)
131 #define NDP_MAX_FIN_RA_NUMOF (3U)
132 #define NDP_MIN_MS_DELAY_BETWEEN_RAS (3000U)
133 #define NDP_MAX_RA_DELAY (500U)
134 #define NDP_MAX_RA_INTERVAL_MS (600000U)
135 #define NDP_MIN_RA_INTERVAL_MS (198000U)
136 #define NDP_RTR_LTIME_SEC (1800U)
144 #define NDP_MAX_RS_MS_DELAY (1000U)
145 #define NDP_RS_MS_INTERVAL (4000U)
146 #define NDP_MAX_RS_NUMOF (3U)
154 #define NDP_MAX_MC_SOL_NUMOF (3U)
155 #define NDP_MAX_UC_SOL_NUMOF (3U)
164 #define NDP_DAD_TRANSMIT_NUMOF (1U)
165 #define NDP_MAX_ANYCAST_MS_DELAY (1000U)
166 #define NDP_MAX_NA_NUMOF (3U)
167 #define NDP_REACH_MS (30000U)
168 #define NDP_RETRANS_TIMER_MS (1000U)
174 #define NDP_MAX_RETRANS_TIMER_MS (60000U)
175 
183 #define NDP_MAX_NS_NUMOF (17U)
184 #define NDP_DELAY_FIRST_PROBE_MS (5000U)
185 #define NDP_MIN_RANDOM_FACTOR (500U)
186 #define NDP_MAX_RANDOM_FACTOR (1500U)
195 typedef struct __attribute__((packed)) {
196  uint8_t type;
197  uint8_t code;
200 } ndp_rtr_sol_t;
201 
208 typedef struct __attribute__((packed)) {
209  uint8_t type;
210  uint8_t code;
212  uint8_t cur_hl;
213  uint8_t flags;
217 } ndp_rtr_adv_t;
218 
225 typedef struct __attribute__((packed)) {
226  uint8_t type;
227  uint8_t code;
231 } ndp_nbr_sol_t;
232 
239 typedef struct __attribute__((packed)) {
240  uint8_t type;
241  uint8_t code;
243  uint8_t flags;
244  uint8_t resv[3];
246 } ndp_nbr_adv_t;
247 
254 typedef struct __attribute__((packed)) {
255  uint8_t type;
256  uint8_t code;
262 
267 typedef struct __attribute__((packed)) {
268  uint8_t type;
269  uint8_t len;
270 } ndp_opt_t;
271 
272 /* XXX: slla and tlla are just ndp_opt_t with variable link layer address
273  * appended */
274 
281 typedef struct __attribute__((packed)) {
282  uint8_t type;
283  uint8_t len;
284  uint8_t prefix_len;
285  uint8_t flags;
290 } ndp_opt_pi_t;
291 
298 typedef struct __attribute__((packed)) {
299  uint8_t type;
300  uint8_t len;
301  uint8_t resv[6];
302 } ndp_opt_rh_t;
303 
310 typedef struct __attribute__((packed)) {
311  uint8_t type;
312  uint8_t len;
315 } ndp_opt_mtu_t;
316 
317 
318 #ifdef __cplusplus
319 }
320 #endif
321 
322 #endif /* NET_NDP_H */
323 
network_uint32_t mtu
MTU.
Definition: ndp.h:314
uint8_t type
message type
Definition: ndp.h:196
Definitions for IPv6 addresses.
network_uint16_t csum
checksum
Definition: ndp.h:242
Prefix information option format.
Definition: ndp.h:281
Neighbor solicitation message format.
Definition: ndp.h:225
A 32 bit integer in big endian aka network byte order.
Definition: byteorder.h:86
Neighbor advertisement message format.
Definition: ndp.h:239
uint8_t code
message code
Definition: ndp.h:227
MTU option format.
Definition: ndp.h:310
uint8_t type
option type
Definition: ndp.h:282
A 16 bit integer in big endian aka network byte order.
Definition: byteorder.h:76
network_uint32_t pref_ltime
preferred lifetime
Definition: ndp.h:287
Redirected header option format.
Definition: ndp.h:298
uint8_t flags
flags
Definition: ndp.h:243
uint8_t cur_hl
current hop limit
Definition: ndp.h:212
uint8_t type
message type
Definition: ndp.h:255
network_uint16_t csum
checksum
Definition: ndp.h:257
General NDP option format.
Definition: ndp.h:267
network_uint32_t resv
reserved field
Definition: ndp.h:199
uint8_t flags
flags
Definition: ndp.h:213
uint8_t type
option type
Definition: ndp.h:311
uint8_t len
length in units of 8 octets
Definition: ndp.h:269
uint8_t type
option type
Definition: ndp.h:299
Router advertisement message format.
Definition: ndp.h:208
Redirect message format.
Definition: ndp.h:254
network_uint16_t csum
checksum
Definition: ndp.h:228
uint8_t prefix_len
prefix length
Definition: ndp.h:284
uint8_t type
message type
Definition: ndp.h:226
uint8_t type
message type
Definition: ndp.h:209
network_uint32_t resv
reserved field
Definition: ndp.h:288
ipv6_addr_t dst
destination address
Definition: ndp.h:260
network_uint32_t retrans_timer
retransmission timer
Definition: ndp.h:216
network_uint32_t reach_time
reachable time
Definition: ndp.h:215
ipv6_addr_t tgt
target address
Definition: ndp.h:259
network_uint32_t resv
reserved field
Definition: ndp.h:229
uint8_t code
message code
Definition: ndp.h:197
ipv6_addr_t tgt
target address
Definition: ndp.h:245
network_uint32_t valid_ltime
valid lifetime
Definition: ndp.h:286
Functions to work with different byte orders.
uint8_t type
option type
Definition: ndp.h:268
Router solicitation message format.
Definition: ndp.h:195
ipv6_addr_t prefix
prefix
Definition: ndp.h:289
uint8_t code
message code
Definition: ndp.h:210
uint8_t len
length in units of 8 octets
Definition: ndp.h:312
ipv6_addr_t tgt
target address
Definition: ndp.h:230
uint8_t type
message type
Definition: ndp.h:240
network_uint32_t resv
reserved field
Definition: ndp.h:258
Data type to represent an IPv6 address.
Definition: ipv6/addr.h:74
network_uint16_t resv
reserved field
Definition: ndp.h:313
uint8_t code
message code
Definition: ndp.h:241
uint8_t flags
flags
Definition: ndp.h:285
network_uint16_t csum
checksum
Definition: ndp.h:198
network_uint16_t ltime
router lifetime
Definition: ndp.h:214
uint8_t code
message code
Definition: ndp.h:256
uint8_t len
length in units of 8 octets
Definition: ndp.h:300
uint8_t len
length in units of 8 octets
Definition: ndp.h:283
network_uint16_t csum
checksum
Definition: ndp.h:211